<s>
Shutter	B-Algorithm
priority	I-Algorithm
(	O
usually	O
denoted	O
as	O
S	O
on	O
the	O
mode	B-Algorithm
dial	I-Algorithm
)	O
,	O
also	O
called	O
time	O
value	O
(	O
abbreviated	O
as	O
Tv	O
)	O
,	O
refers	O
to	O
a	O
setting	O
on	O
cameras	O
that	O
allows	O
the	O
user	O
to	O
choose	O
a	O
specific	O
shutter	O
speed	O
while	O
the	O
camera	O
adjusts	O
the	O
aperture	B-General_Concept
to	O
ensure	O
correct	O
exposure	O
.	O
</s>
<s>
This	O
is	O
different	O
from	O
manual	O
mode	O
,	O
where	O
the	O
user	O
must	O
decide	O
both	O
values	O
,	O
aperture	B-Algorithm
priority	I-Algorithm
where	O
the	O
user	O
picks	O
an	O
aperture	B-General_Concept
with	O
the	O
camera	O
selecting	O
the	O
shutter	O
speed	O
to	O
match	O
,	O
or	O
program	B-Device
mode	I-Device
where	O
the	O
camera	O
selects	O
both	O
.	O
</s>
<s>
Shutter	B-Algorithm
priority	I-Algorithm
with	O
longer	O
exposures	O
is	O
chosen	O
to	O
create	O
an	O
impression	O
of	O
motion	O
.	O
</s>
<s>
When	O
photographing	O
sports	O
or	O
high-speed	O
phenomena	O
,	O
shutter	B-Algorithm
priority	I-Algorithm
with	O
short	O
exposures	O
can	O
ensure	O
that	O
the	O
motion	O
is	O
effectively	O
frozen	O
in	O
the	O
resulting	O
image	O
.	O
</s>
<s>
Like	O
aperture	B-Algorithm
priority	I-Algorithm
,	O
this	O
mode	O
allows	O
for	O
partial	O
automation	O
thus	O
decreasing	O
the	O
need	O
for	O
total	O
concentration	O
.	O
</s>
<s>
Shutter	B-Algorithm
priority	I-Algorithm
is	O
often	O
abbreviated	O
as	O
S	O
(	O
with	O
Nikon	O
,	O
Minolta	O
,	O
Konica	O
Minolta	O
,	O
Sony	O
,	O
Olympus	O
,	O
Sigma	O
,	O
Panasonic	O
)	O
or	O
Tv	O
(	O
for	O
"	O
time	O
value	O
"	O
with	O
Canon	O
,	O
Pentax	O
,	O
Leica	O
)	O
on	O
a	O
camera	B-Algorithm
mode	I-Algorithm
dial	I-Algorithm
.	O
</s>
